Added Mod Preview image, updated ReadMe.txt and included PublishedFie…

…ld.ID file for the DLC2 Highlander.

Components/DLC2CommunityHighlander/DLC2CommunityHighlander/PublishedFileId.ID

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+2534737016

Components/DLC2CommunityHighlander/DLC2CommunityHighlander/ReadMe.txt

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-You created an XCOM 2 Mod Project!
+[WOTC] Alien Hunters Community Highlander
+
+This mod is a plugin for [b]Community Highlander[/b] of versions 1.22 and higher, which is the current version of the [url=https://steamcommunity.com/sharedfiles/filedetails/?id=1796402257][b][BETA] X2WOTCCommunityHighlander[/b][/url].
+
+This plugin is [b][i]REQUIRED[/i][/b] if you have the [b]Alien Hunters DLC[/b]. 
+
+If you do [b][i]NOT[/i][/b] have the Alien Hunters DLC, then you should [b][i]NOT[/i][/b] use this plugin, as it may cause gamebreaking issues.
+
+Similar to the Highlander itself, this plugin replaces script packages of the Alien Hunters DLC in order to make the it more moddable and mod-compatible, as well as fixing some bugs.
+
+[h1]How do I use this plugin?[/h1]
+
+Install and enable this mod as usual. You do not have to do anything else. Make sure to use it [b][i]ONLY[/i][/b] if you have Alien Hunters DLC installed and enabled.
+
+If you require help or wish to contribute to this project, please follow the links in the [b][url=https://steamcommunity.com/sharedfiles/filedetails/?id=1134256495]main Highlander description[/url][/b].
+
+Contributions to this plugin are accepted through the main Highlander repository, which now contains both the Highlander itself and this Alien Hunters plugin.